if you need a POP email client, and a ton more, try the one included with Floppy Office
. (it's nPOPuk)
NPopUK is a full featured email client (a far improved version of the brilliant nPOP itself), which as it is, can almost replace MS Outlook Express. It supports authentication, address book, multiple POP accounts and much more!
Floppy office is a collection of small portable utilities perfect for a USB stick, and the whole collection is actually small enough to fit on a single floppy. There are at least 15 applications in it:
KPad (kPad.zip) - A simple MDI Rich Text editor
NPop (npop102win32_eng.zip) - A complete POP3 email client
(almost replaces Outlook Express)
Ted (tnp451re_uni.zip) - An unbelievably full featured notepad replacement which
supports unicode.(completely replaces notepad, and then some)
EVE (eve.zip)- A vector editor graphics program which can serve as a flow chart tool
(replaces MS Paint, even though Paint is a bitmap editor...)
iFtp (iftp-win32-v198.zip)- A simple FTP client
110k Zipper (100ziper.exe) - A small zip/unzip utility
(almost replaces Winzip)
PDF Producer (PDFproducerExe.zip) - A simple text-PDF conversion application
(almost replaces PDF printer driver)
Spread32 (spread32.zip) - A full-featured spreasheet program.
Version 19991112 Beta is the last free one. (almost replaces MS Excel)
MemPad (mempad.zip) - keeps little tree sytle notes with a handy index.
(handy rudimentary outliner)
RenameFiles (renamefiles_v2.42_us.zip) - a handy program for
renaming multiple files in a single step
dsCrypt (dscrypt.exe) - An AES/Rijndael file encryption software
X-Pass (xpass.zip) - X-Pass reveals all system password fields
dsDEL (dsdel.exe) - dsDEL is a secure file deletion utility
TinyWeb Server (tinyweb.zip) - Complete web server, WWW supports MIME file typing, CGI, common log format, and multi-hosting
TinyBox (tinybox.zip) - A graphical user interface for TinyWeb Server!
There is a newer version 3.9 available but I haven't downloaded it yet.
Screenshot:Looking for an E-Mail Client which can be run on an USB Stick